Planograpii



P. IVI. GRIGGS.

` RESILIENT WHEEL.

APPLICATION FILED NOV. 24. I9l6.

L ,3 1 5 300, Patented Sept. 9, 1919.

I 2 SHEETS-SHEET I- 'Tx-uz toLUMBM PLANQGRAPII C04. WASHINGTON. D. c.

P. M. GRIGGS. RE'SILIENT WHEEL.

I APPLICATION FILED NOV. 24.1916. 1,315,300. Patented Sept. 9, 1919.

2 SHEETS-SHEET 2.

Jenner ivi. entrees, or Fonrfianineiin, WY` oiviING.

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` specification of Leftrraei. Pgtntd 591315,53, 1919,

Application-filed November 24, .1916. i SerialNo. 133,196.` i

To all 'wlw/mit may concern:

Be it known that I, PERCY M. GRIGGS, a`

citizen of the United States, residing at Fort] Bridger, in the county of Uintal and 4State of Viyoniing, have inventedcertain new and useful Improvements in Resilient Wheels; and I do hereby declare the 1 following to be a full, clear, and exactwdescription of the invention, such as will .enable others skilled in the art `to which it appertains to make and use the saine.

rlhis invention relates to motor` vehicle wheels, and the primary object of the invention is to provide a wheel having a resilient rimA structure, upon the outer surface of which aresilient tire structurewis mounted,` for absorbing shocks occasioned by travelof the vehicle wheel-over roughplacesin a roadway, which resilient wheel and tire structure will replace theordinary pneu-` Fig 2,`andv` i matic tire employed "for this purpose.

Another object of this invention is to` `provide a resilient wheel structure including a hub having a plurality of radiating spokes extending outwardlytherefrom, to the outer ends of which spokes is `attached a circular band or riin of metal, and to attach a plurality `of arcuate springs to the rim, which springs have their ends inturn connected to arcuate springs which` are curved Voppositely to the springs attached to the inner" band and are attached toan outer1 band'ior rim, for providing a resilient `riin structure for the wheel. i i

A still further object "of this invention is to provide a resilient tire structure which is mounted about the resilient rim" structure andincludes an outer shoeor casing-constructed in the ordinary manner, orlin` any desired manner, which casingor shoe has a fiat spring positioned therein, which flat u spring is curved sinuously, forming` curved portions which engage the inner surface of the tread portion of theslioe or casingV and curved portions which engagethe outer surface cfa platewhich is positioned against the outer surface of an ordinary deniountable i'iin which is attached to the resilient wheel rim, and further to provide a plurality of coil springs which are positioned within the tire, at spaced intervals about the circumference of the saine, and extend radially of the hub of the wheel for coacting with the sinuously bent flat spring for absorbing shock.

lNitli the foregoing and other objects in view, this invention consists in such novel features of construction, combination and arrangement ofparts will be hereinafter more fully described, illustrated in the accompanyiiigdrawings and claimed.` s `In describing the invention in detail, reference will be had to the accompanying drawings wherein like characters designate like and corresponding 1p arts throughout the several views, and in which Figure 1 is a side elevation of a wheel constructed in accordance with this invention,

showing a part of the resilient rim and resiliV ent tire structures in section.

illustrating `the manner oflconnecting the arcuate fiat` springs of `the resilient rini structure.

Referringinore particularly to the drawi ings, `l designates the hublof the wheel Which has a plurality of radiating spokes 2 connected thereto. 7A circular band 8 is attached-to the spokes outwardly ofi the hub 1` forreinforcing them. .i i

A flat circularinetal band or innerxriinv 4; is attached to the outer ends ofthe spokes 2 in any suitable manner, as indicated at 5 uit fiale `3 3 of.

Fig. 35` isa detail `view partially in section:`

. Fig. 2 is` an enlarged sectional View" `and this rim has a plurality of.` arcuate springs `attached theretoasshown at 7.

The springs `6 rare curved, so asto 4present their convex surfaces toward the outer surface ofthe rim 4, and they have their ends coiled as shown at: `8, and attached to the coiled ends 9 of arcuate springs lOby means of screwsorbolts as indicated at 1l in Fig.

5 of the drawings. The arcuate springs l() bow oppositely to the springs 6, and present their convex surfacesA to an outerrinior band 12.! The springslO areattached to the iband 12in any suitable manner, such as `by rivets or the like as indicated at 13. Theprovision ofthe arcuate springs 6 and 10, beingoppositely curved, "willpei'u'iit of disguration of the rim structure, and facilitate incushioning shocks occasioned `by the travel of the wheel over rough places in a roadway.

The metal band or inner rim -i is provided with spaced outwardly projecting radially directed lsecuring lugs by means of which side plates 4 are detachablyfsecured to the rim 4L through the 4medium of securing screws, or in any otherl suitable manner.,

These side plates are of such width as to` iit within theouter rim section thus producing Y a telescoping structure which permits'niovement of the outer rim section toward-and away from the innerrim.sectionwliile serving to protect the springsV 6 and 10y from dust, grit, and other foreign material.

f The' outer rim 12 has a demountable riin "structure 14 mounted thereon, which comprises sections 15 and 16, having their inner Y edges abutting, as clearly shown at 17 in Figs. 3 and 4 of the drawings. AThe secftions 15 and 16 are held about the resilient rim structure by means of bolts 17V inserted i through flanges 18 of the sections.'V

The resilient tire structure generically indicated by the numeral 20 is connected to the demountable rim structure 14 in the usual manner, as bymeans of the beads 21 f formed about the edges of the shoe or casing 'l 22 of the tire structure..v

YThe shoe 22'of the tire structure preferably constructed of an outer. layer 23 of rubber, an` intermediate layerg24 of canvas `which vis impregnated with rubber, and an inner laye'i1 25 of cork. The shoe 22-has a i spring, or if rit 'isVv desired fa Aplurality of Vsprings mounted therein, which are beni'. vsinuously, Vpresenting' curved surfaces `27, ,which Vengage the inner surface of a resilient band'26a mounted at the `tread` portion of the shoe 22, and curved portions28, Awhich engage theV outerr surfaceY of a plate 29.

kThe Yplate 29 is Vconstructed of spring steel oranalogous material, and it engages the outer surface of thedemcuntable rim struc- Y ture 14, as clearly shown in Figs. 3 and 4 ,In reducing theinvention to -practice,`

certain minor features of construction, c0in biiiation and arrangement of parts may ne vcessitate alterationsvto which the pateiitee is entitled provided such alterations areconiprehendedwithinthe scoperof what is i claimed.

What is claimed is l -1. In a resilient Wheel structure, the coinbinatioii, of a hub, a plurality of radiating l spokesl connected to said hub, a circular 1 lmetal band attached to the outer ends of said spokes, aplu'rality of arcuate springs, havportion' ing their convex surfaces facing the outer surface of said metallic band, means for securing said springs to said band, a second plurality of arcuate springs being curved oppositely to the iirst nained plurality of arcuate springs, a second niet-al band positioned eXteriorly of and secured to said second plurality of arcuate springs, said springs having their ends coiled and connected for forming a continuous sinuous spring between the inner and outer metal bands.

2. In a resilient wheel structure, the coinbinatioii, of a hub, a plurality of radiatingr spokes connected to said hub, a circular metal bandY attached to the outer ends oli' said spokes, a plurality of arcuate springs, having their convex surfaces facing the vouter surface of said metallic band, means for securing said springs to said band, a second plurality of arcuate springs being curved oppositely to the iii-st named plu rality of arcuate springs, a second metal band positioned exteriorly of and secured to said second plurality of arcuate springs,

Vsaid springs having their ends coiled and connected for .forming a continuous siiiuous spring between the inner and outer nletal bands, a deiiiountable iini structure mounted about said outer metal band, and a resilient tire connected to said deniountable i'iin structure. I

3. In a resilient wheel structure, the conibiiiation of a hub, a plurality of radiating spokes 'connected to said hub, a circular metal band attached to the outer ends ol said spokes, a plurality of arcuate springs having their convex surfaces facing the outer surface of said metallic band. ineans for securing saidsprings to said band, a second plurality of arcuate springs curved oppositely tothe first named plurality,7 olE arcuate springs, a second metal band positionedexteriorly of and securedV topsaid sec- Oiidplura'lity of arcuate springs, the ends of said springs being coiled, the coils of the meeting, ends of the springs curving one within theV other, the terminals of the meetingcoiled ends being Hat and lying in facial engagement with each other, and bolts extending through and detacliably connecting l the engaging terminals.

In testimony whereof I atliX my signature in presence of two witnesses.

PERCY M. GRIG( ,l S.

` Vitnesses:

N. W. GniGGs, W. C. CAs'ro.

Copiesr'of this patent may be obtained for ve cents each, by addressing the Commissioner n! Patents.

Washington, D. C. 

